Organisational Reassignment showing error

Dear Experts,

We are facing error "Org reassignmen not permitted message PG-162" while executing organisational reassignemnt action, while changing assignment of employees from one to country to other. like from USA to KOREA.

Client ' system version is 4.6 C. and they are not intersted to have a new PERNR in other country after resiignment.

Is Global employee management facility available in 4.6 C , where we can use the Personnel ID concept.